nmartinezduarte2005 nmartinezduarte2005

16-12-2019
Mathematics

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It costs $900 to run a water treatment facility machine for 4 hours. Jake spent $4500 to run the machine. For how many hours did jake run the machine?

Respuesta :

musiclover10045 musiclover10045

16-12-2019

900 / 4 = 225 per hour.

Divide total cost by cost per hour:

4500 / 225 = 20 hours

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